Doctors know about Vitamin D. Not sure why you think they would need Dr. Fauci to tell them about it. I've also been hearing about Vitamin D from every angle on social media for the past 2 years.
I'm not sure how one of hottest COVID pop-culture prevention suggestions could be considered an underground concept at this point.
The misunderstanding might be in the magnitude of effect: Vitamin D moves the needle a little bit, but it's nowhere near a magic bullet against Vitamin D or a solution to the crisis (as many health and fitness influencers have tried to suggest).
I'm not sure how one of hottest COVID pop-culture prevention suggestions could be considered an underground concept at this point.
The misunderstanding might be in the magnitude of effect: Vitamin D moves the needle a little bit, but it's nowhere near a magic bullet against Vitamin D or a solution to the crisis (as many health and fitness influencers have tried to suggest).